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406.0000 Family Cactaceae Juss.; Gen. Pl. [Jussieu] 310 (1789), nom. cons.
133 genera, ca. 1700-1800 spp. There has been excessive splitting, leading to over 3000 species in some collectors view. The phylogeny is still somewhat in flux, but is getting more stabilized now. It should be good practice in the future that each ´new species´ description is confirmed by molecular genetics, not only by morphology.
Species listed in database: 1808; hybrids: 78
= Cereaceae DC. & Spreng.(transl.Jameson); Elem. Philos. Pl. 142 (1821)
= Mammillariaceae D.L.Fu; Amer. J. Agric. Forest. 12(5): 352 (2024)
= Nopaleaceae E.Schmid & Curtman; Pflanzenreich [Petermann] 2: 135 (1856)
= Opuntiaceae Desv.; Dict. Rais. Bot. 52, 385 (1817)
406.5858 Genus Trichocereus (A.Berger) Riccob.; Boll. Reale Orto Bot. Palermo 8: 236 (1909)
Distribution: Ecuador to N-Chile. Often included in Echinopsis s. l. but recently separated based on molecular genetics
Species listed in database: 4
species :
Trichocereus cuzcoensis Britton & Rose; Cactaceae [Britton & Rose] 2: 136 (1920)
Distribution: Peru
83 PER
Synonyms: hidden
= Azureocereus deflexispinus Backeb. ex Rauh; Sitzungsber. Heidelberger Akad. Wiss., Math.-Naturwiss. Kl., Abh. 1 (Beitr. Peruan. Kakt.): 281 (1958)
= Cereus cuzcoensis (Britton & Rose) Werderm.; Neue Kakteen 73, 101 (1931)
= Cereus deflexispinus Rauh & Backeb.; Descr. Cact. Nov. [Backeberg] 1: 14 (1956 publ. 1957)
= Echinopsis cuzcoensis (Britton & Rose) H.Friedrich & G.D.Rowley; I.O.S. Bull. 3(3): 95 (1974)
= Echinopsis knuthiana (Backeb.) H.Friedrich & G.D.Rowley; I.O.S. Bull. 3(3): 96 (1974)
= Echinopsis tarmaensis (Rauh & Backeb.) H.Friedrich & G.D.Rowley; I.O.S. Bull. 3(3): 98 (1974)
= Echinopsis tulhuayacensis (Ochoa ex Backeb.) H.Friedrich & G.D.Rowley; I.O.S. Bull. 3(3): 98 (1974)
= Trichocereus knuthianus Backeb.; Succulenta (Netherlands) 19: 42 (1937)
= Trichocereus tarmaensis Rauh & Backeb.; Descr. Cact. Nov. [Backeberg] 1: 20 (1956 publ. 1957)
= Trichocereus tulhuayacensis Ochoa ex Backeb.; Kakteen And. Sukk. 8: 106 (1957)
species :
Trichocereus macrogonus (Salm-Dyck) Riccob.; Boll. Reale Orto Bot. Palermo 8: 236 (1909)
Distribution: Peru; Bolivia (Cordillera Prov., Santa Cruz)
83 BOL PER
Synonyms: hidden
= Cereus macrogonus Salm-Dyck; Cact. Hort. Dyck. [1849 ed.]: 203 (1850)
= Cereus rosei Werderm.; Neue Kakteen 73, 101 (1931)
= Echinopsis macrogona (Salm-Dyck) H.Friedrich & G.D.Rowley; I.O.S. Bull. 3: 96 (1974)
= Echinopsis peruviana (Britton & Rose) H.Friedrich & G.D.Rowley; I.O.S. Bull. 3(31: 97 (1974)
= Echinopsis peruviana subsp. puquiensis (Rauh & Backeb.) H.Friedrich & G.D.Rowley; I.O.S. Bull. 3(3): 97 (1974)
= Echinopsis peruviana subsp. puquiensis (Rauh & Backeb.) Ostolaza; Cactaceae Consensus Init. 6: 8 (1998), isonym
= Echinopsis puquiensis (Rauh & Backeb.) H.Friedrich & G.D.Rowley; I.O.S. Bull. 3(3): 97 (1974)
= Echinopsis trichosa (Cárdenas) H.Friedrich & G.D.Rowley; I.O.S. Bull. 3: 98 (1974)
= Trichocereus macrogonus subsp. peruvianus (Britton & Rose) Lodé; Cact.-Advent. Int. (Almeria) 36: 144 (2024)
= Trichocereus macrogonus subsp. sanpedro M.H.J.van der Meer; Cact. Phantast. 2022(1)-1: 7 (2022)
= Trichocereus macrogonus var. peruvianus (Britton & Rose) Lodé; Cact.-Advent. Int. (Almeria) 97: 3 (2012)
= Trichocereus pachanoi f. peruvianus (Britton & Rose) F.Ritter; Kakteen Südamerika 4: 1324 (1981)
= Trichocereus peruvianus Britton & Rose; Cactaceae [Britton & Rose] 2: 136 (1920)
= Trichocereus peruvianus subsp. puquiensis (Rauh & Backeb.) Ostolaza; Cactus Perú 420 (2014)
= Trichocereus puquiensis Rauh & Backeb.; Descr. Cact. Nov. [Backeberg] 1: 20 (1956 publ. 1957)
= Trichocereus tacnaensis F.Ritter; Kakteen Südamerika 4: 1326 (1981)
= Trichocereus trichosus Cárdenas; Cactus (Paris) 57: 249 (1957)
variant :
var. pachanoi (Britton & Rose) Albesiano & R.Kiesling; Haseltonia 17: 32 (2012)
Name: San Pedro Cactus, Andachuma, Aguacolla, Gigantón, Huachuma
Distribution: Colombia [I]; Ecuador; Peru
82 clm 83 ECU PER
Synonyms: hidden
= Cereus pachanoi (Britton & Rose) Werderm.; Neue Kakteen 73 (1931)
= Echinopsis chalaensis (Rauh & Backeb.) H.Friedrich & G.D.Rowley; I.O.S. Bull. 3(3): 94 (1974)
= Echinopsis pachanoi (Britton & Rose) H.Friedrich & G.D.Rowley; I.O.S. Bull. 3(3): 96 (1974)
= Echinopsis santaensis (Rauh & Backeb.) H.Friedrich & G.D.Rowley; I.O.S. Bull. 3(3): 97 (1974)
= Echinopsis schoenii (Rauh & Backeb.) H.Friedrich & G.D.Rowley; I.O.S. Bull. 3(3): 97 (1974)
= Trichocereus chalaensis Rauh & Backeb.; Descr. Cact. Nov. [Backeberg] 1: 20 (1956 publ. 1957)
= Trichocereus macrogonus subsp. pachanoi (Britton & Rose) Lodé; Cact.-Advent. Int. (Almeria) 36: 144 (2024)
= Trichocereus pachanoi Britton & Rose; Cactaceae [Britton & Rose] 2: 134 (1920)
= Trichocereus santaensis Rauh & Backeb.; Descr. Cact. Nov. [Backeberg] 1: 20 (1956 publ. 1957)
= Trichocereus schoenii Rauh & Backeb.; Sitzungsber. Heidelberger Akad. Wiss., Math.-Naturwiss. Kl. 1958: 362 (1958)
= Trichocereus torataensis F.Ritter; Kakteen Südamerika 4: 1325 (1981)
species :
Trichocereus spinibarbis (Otto ex Pfeiff.) F.Ritter; Kakteen And. Sukk. 16: 212 (1965)
Distribution: Chile (Antofagasta, Atacama)
85 CLE
Synonyms: hidden
= Cereus spinibarbis Otto ex Pfeiff.; Enum. Diagn. Cact. 86 (1837), nom. rej.
= Echinocereus spinibarbis (Otto ex Pfeiff.) K.Schum.; Monatsschr. Kakteenk. 5: 124 (1895)
= Echinopsis spinibarbis (Otto ex Pfeiff.) A.E.Hoffm.; Cact. Fl. Silvestre Chile 90 (1989)
= Eulychnia spinibarbis (Otto ex Pfeiff.) Britton & Rose; Cactaceae [Britton & Rose] 2: 82 (1920)
species :
Trichocereus uyupampensis Backeb.; Blätt. Kakteenf. 7: 7, Backeb. in Kaktus-ABC [Backeberg & Knuth] 205, 412 (1935)
Distribution: Peru; Chile (Tarapacá)
83 PER 85 CLE
Synonyms: hidden
= Echinopsis glauca (F.Ritter) H.Friedrich & G.D.Rowley; I.O.S. Bull. 3(3): 95 (1974)
= Echinopsis glauca f. pendens (F.Ritter) H.Friedrich & G.D.Rowley; I.O.S. Bull. 3(3): 95 (1974)
= Echinopsis tucumanensis Y.Itô; Explan. Diagr. Austroechinocactinae 285 (1957)
= Echinopsis uyupampensis (Backeb.) H.Friedrich & G.D.Rowley; I.O.S. Bull. 3(3): 99 (1974)
= Echinopsis valida Monv.; Herb. Gén. Amat., Sér. 2, 3(Misc.): 42 (1843)
= Echinopsis valida var. forbesii Rud.Mey.; Monatsschr. Kakteenk. 5: 133 (1895)
= Trichocereus glaucus f. pendens F.Ritter; Kakteen And. Sukk. 11: 180 (1962), no type indicated
= Trichocereus glaucus F.Ritter; Kakteen And. Sukk. 13: 180 (1962)
= Trichocereus glaucus var. pendens (F.Ritter) Backeb.; Kakteenlexikon 437 (1966), nom. inval.
= Trichocereus validus (Monv. ex Salm-Dyck) Backeb.; Cactus (Paris) 46-47: 265 (1955)
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A complete, synonymic checklist of the Higher Plants of the World

Version 25.06 (June 15th, 2025)

Covering 356,645 accepted species,
8,788 hybrids, 48,065 accepted infraspecific taxa and 1,003,237 synonyms,
in total 1,416,735* names

[*about 25,000 dubious, "unplaced" names and about 4,000 invalid names (Art. 24.3) like "typicus" are deliberately omitted]

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